A process for removal of hydrogen sulfide from gaseous mixtures with severely sterically hindered secondary amino compounds.

摘要

The removal of H2S from a normally gaseous stream is accomplished with an absorbent solution containing a sterically hindered secondary amino alcohol having a cumulative -Es value (Taft's steric hindrance constant) greater than about 1.75. In a preferred embodiment the gaseous stream also contains CO2, and the H2S is selectively removed from the stream. The most preferred amino alcohol herein is tertiarybutylaminoethoxyethanol.